This isn't about coke.

When ordering a drink alone, my favourite is diet coke.

I like diet coke.

But when my sister is around, I order coke zero.

I don't have a problem with it, I mean I don't particularly love it and wouldn't choose it normally for myself. But I know that whatever it is - food, clothes, shoes - even when she has her own right in front of her, she always steals some of mine thinking that I won't notice.

So I'm not a fan.

But she likes coke zero.